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Use the Fischer projection for D-gulose in problem 13.69to answer each of the following: (13.3,13.5)

a. Draw the Fischer projection and name the product formed by the reduction of D-gulose.

b. Draw the Fischer projection and name the product formed by the oxidation of D-gulose.

Short Answer

Expert verified
  • Glucose has six carbon atoms, it is classified as a hexose monosaccharide.

a)

b)

Step by step solution

01

Introduction (Part a)

  • An aldehyde functional group is present on one of the carbon atoms.
  • As a result, it belongs to the aldohexose group.
  • It can be dextro- (as in D-glucose) or laevo- (as in L-glucose) depending on the location of the hydroxyl (-OH) groups (as in L-glucose).
  • When rotating plane polarised light clockwise, this nomenclature based on Fischer projection denotes D–. L– is the counterclockwise rotation of plane polarised light.
02

a : Draw the Fischer projection and name the product formed by the reduction of D-gulose.

Oxidation of D-glucose gives D-sorbital when aldehyde of glucose reduces into alcohol

03

:b Draw the Fischer projection and name the product formed by the oxidation of D-gulose. 

In oxidation of glucose aldehyde part oxidizes into carboxylic acid and product is glucuronic acid

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